Sectional heating boiler



May 13, 1930. I H. H. PEEK 1,758,171

SECTIONAL HEATING BOILER Filed Feb. 24, 1928 4.Sheets-Sheet l 20 q :111 .I: :2: :1 1:: 1:.. Z :1- 1:: 6 4 2 a 2 2 2 z 3 O O O O O O O O O I I ::/a l /7 !2 l 25 E O I I I May 13,1930. v H P EK 1,758,171

SECTIONAL HEATING BOILER Filed Feb. 24, 1928 4 Sheets- Sheet 2 gnuenfoa flow 4 M H. H. PEEK SECTIONAL HEATING BOILER May 13, 1930.

4 Sheets-Sheet 3 Filed Feb. 24, 1928 m: w s I May 13, 1930.

H. H. PEEK SEGTIONAL HEATING BOILER Filed Feb. 24, 1928 4 Sheets-Sheet 4 Fa tented May 13, 1930 UNITED. STATES non-non Pann er CHATTANOOGAEENINESSEE sE cTronAr'. 'nnnrrne nornna Application filed. February 24, 1928. Serial No 256,5439"? This invention relates to heating boilers and includes all improvements over the prior,

art which are disclosedin this application.

Broadly, one object is to improve the construction disclosed in my applicatlon onv sectional heating boiler, Serial No. 30,990,'filed May 18,1925.

Specifically, one object is to improve the construction of the gas or smoke passages and door and other large openings in the sections of the boiler, by providing amore homogeneous and proper thickness of metal, particularly at the corners. f

Another object is to providea stronger tighter joint and prevent leaks wherethe'nipples connect the sections together. 7

Another object is to provide a stronger outlet with less chance of leakage.

Another object is to increase the heating surface and therefore steam generation surface and provide better water circulatiomby forming the sections so that the ash pit is completely surrounded by water. This construction also provides a settling chamber for 5 any mud or sediment that may be in the water.

Another object is to provide for easy cleaning of the bottoms of the horizontal water chambers of the sections. p

The above and other objects which will hereinafter appear, are attained by the new and useful improvements disclosed in this ap plication. To enable others skilled in the art to fully understand the essential characteristics of the improvements, drawings illustrating one mode of carrying out the invention have been annexed as part of this disclosure.

Fig. 1 is a longitudinal sectional view of the Figs. 10, 11, 12,13, 14, are sections of Figs.

5, 6,7, 8, 9 respectively on line 10-14.

-. Figs. 15, 16, 17, 18, 19, are sections of Figs.

5, 6, "7, 8, 9, respectively,.online 1519.

Figs. 20,21, 22, 23, 24, are sections of Figs.

5, 6, 7 8, 9, respectively, on line 2024.

-'Figs. 25, 26, 27, 28, 29, are sections of Figs. 5, 6, 7,8, 9, respectively on line 25 29.

ig. '80Iis an enlarged view of the reinforced plate construction, where a nipple connects two "sections as shown in Fig.1

The present embodiment of boiler is broadly similar to that in my previously re-' ferred to" application Serial No. 30,990, 'GX- cept nsuchrespects' as are different in. the drawings of the present application. The boilerincludes a water container including a 'plurality ofunits or sections 1,2, '3, 4, 5, bolted together by thru rods 6 ma usual ma'nner. Unit 1, for example, (Figs. 1,2, 3, 5, 10, 15, 20, 25) ismade by pressing to shape com plementary parts 10, 11 of sheet metal, preferably' steel, and integrally joining the same preferably edge to edge along their meeting edges preferably by-autogenous welding such asby gas or the electric are as indicated at 12. In the gas or smoke and door openings 13, n units 1,2, 3, 4, 5, the edges of the'com plementary parts 10, 11' do not meet, butthe edges 14 are turned oriflanged slightly inwardtoward eachother, and a thimble 15 is made of a suitable size to fit within the openmg. .A'ny or all of. the thimbles may be seamless as at 16 or formed by bending to shape from a piece of sheet metal and welding the meeting edges together as at 17. Whichever way-the thimble is formed,'it is placed within an opening13 and its edges are expanded to have affairs, and welded as at 18. This makes a. water tight construction with the metal homogeneous and of normal full thickness at the corners.

In thecase of the larger openingsin units 2, 3, .4, 5 ;those'corners where the metal would be subjected-t0 maximum thinning if made integral, are made-by inserting corner pieces 19 and welding each of them along its four edges as at '20, thus providingfull thickness of metal at the corners and making a more perfect boiler;

Reinforcing lates 21 (Fig. 30) are welded on the inside oi the sectionwallsfat the places where nipples 22 connect the sections togther. This gives a stifier and stronger construction and increases the bearing surface for the slip or screw nipple, thereby providing a tighter joint and preventing leaks around the connection nipple where the sections are connected together. r a a v Each of outlets 23 is welded on the outside at 2st, and on the inside has a flange 25' which may also be welded-at 26. The welding on the outside with flange inside gives a trong watertight construction, and when the flange 7 inside is also welded, still greater strength is obtained with minim-um chance ofleakage;

The sections preferablya-ll extend down to the bottom of the boiler and have bottom horizontal water chambers 27,=thus completely surrounding the ash pit. This construction provides additional heating surface and therefore additional steam generation surface. It also increases the rapidity of the circulation of the water in the. boiler, and also provides a settling chamber for catching the mudor sediment that may be inthe'water used in the boiler. p

. Openings 28 on opposite sidesof the sectionsare normally closed byremovable plugs 29, and are so placed preferably to permit cleaning in a line in the direction of width of the sectionsa-nd just above the bottoms of the various horizontal waterychambers 27, 30. Ihis provides means for readily cleaning the boiler free ofmud or scale by means of a bar or hose inserted: and operated through openings 28.

The invention may be embodied in other, specific forms without departing'from the spirit or essential characteristics of the invention, and the present embodiment is therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range ofequivalency of the claims are therefore intended t'o'be embraced therein.

Iclaim 1 1. A sectional boiler section-including, two

or'door opening partially formed by edges of the complementary parts around the opening extending toward each other, and a thimble in the opening having its edges welded to the complementary parts around the opening.

8. A sectional heating boiler including, a plurality of sections connected together, a grate and an ash-pit,a majority of the sections in the region of the ash pit having water chambers extending across beneath the ash'pit .andhaving, the lower walls of'said chambers substantially straight and free from projections for direct engagement with a supporting floor. V

In testnnony whereof I hereunto affix my signature."

v pressed to shape sheet metal complementary I parts having edges extending toward each other and welded together-toparti'ally form an opening in thesection, and 'a: number of corners of the opening each formed by an inserted corner piece extending across the line of weld of the edges ofthe complementary parts, and the edges of said inserted corner piece beingwelded to said complementary parts. 1 V g 2. A sectional boiler section including, two pressed to shape sheet metal complementary parts having outer edges extending toward each other and welded together, and a smoke 1 HORACE H. PE-EK.

lllli 

